The PTET election lets owners of S corps and partnerships pay state income tax at the entity level instead of the individual level, which turns a capped personal deduction into an uncapped business expense. That single move gets around the $10,000 SALT cap Congress imposed in 2017. Over 36 states now allow it, and the IRS has already said it's legal. If you own a profitable pass-through and you're still eating the SALT cap every April, you're leaving real money on the table.
This isn't a gray-area tax shelter. It's a structural response to a law that punished business owners in high-tax states. Understanding it takes ten minutes. Using it wrong costs thousands.
Before 2017, you could deduct every dollar of state and local tax paid on your federal return. The Tax Cuts and Jobs Act capped that deduction at $10,000 per return, married or single. For someone paying $40,000 in state income tax in California or New York, that cap wiped out $30,000 of deductions overnight.
States noticed their high earners were furious, and they noticed something else too: the cap only applied to individuals. It said nothing about businesses. A partnership or S corp paying state tax as an entity could still deduct the full amount as an ordinary business expense, no cap in sight.
Connecticut moved first in 2018, passing a mandatory entity-level tax specifically to route around the cap. Other states watched, waited for IRS pushback, and got none. In November 2020, the IRS released Notice 2020-75 and confirmed entity-level state tax payments are fully deductible for federal purposes. That notice turned a risky maneuver into standard planning.
The mechanics are simpler than most tax strategies with this much dollar impact. The pass-through entity elects, usually annually, to pay state income tax directly instead of passing that liability through to owners on their K-1s.
The entity deducts that tax payment on its federal return before income even reaches the owners. Owners then get a credit, exclusion, or offsetting deduction on their state return so they aren't taxed twice on the same income. The net effect: the same state tax gets paid, but it now reduces federal taxable income without touching the $10,000 cap at all.
Say an S corp earns $500,000 and its state tax rate is 9%. That's $45,000 in state tax. Under the old individual-deduction method, only $10,000 of that is federally deductible if the owner has no other SALT expenses. Under PTET, the full $45,000 reduces the entity's federal taxable income. At a 37% top federal rate, that's roughly $13,000 in federal tax saved that wouldn't exist otherwise.
Multiply that across owners with multiple pass-through entities in multiple states, and the savings stack fast. This is why PTET has become one of the most common tax moves recommended to physicians, law partners, and other high-income pass-through owners since 2021.
Every state built its own version, which means the rules don't transfer cleanly from one state to another. Some states make the election mandatory, some make it annual and elective, and deadlines vary wildly. Get the deadline wrong and you lose the benefit for the entire year.
| State | Election Type | Typical Deadline |
|---|---|---|
| California | Elective, annual | June 15 estimated payment required |
| New York | Elective, annual | March 15 (before extensions) |
| Illinois | Elective, annual | With entity's return, no separate form |
| Connecticut | Mandatory | Built into standard filing |
| Texas | Not applicable | No state income tax |
Notice Texas on that list. If your entity operates in a state with no income tax, PTET does nothing for you there, because there's no state tax to shift in the first place. The strategy only matters in states with meaningful income tax rates and it matters most in the highest-tax states: California, New York, New Jersey, and Connecticut.
PTET isn't universally good. Owners already itemizing below the $10,000 cap through mortgage interest and property tax alone get zero marginal benefit from shifting state tax to the entity level. If your SALT deduction was never going to exceed $10,000 anyway, this whole exercise is paperwork for nothing.
C corp owners don't need this at all, since C corps already deduct state tax at the entity level with no cap and never had this problem. PTET is exclusively a pass-through fix: S corps, partnerships, and LLCs taxed as either.
Owners in states without an income tax gain nothing, as shown above with Texas. And owners who plan to claim the foreign tax credit or have complex multi-state apportionment issues should run the numbers with an accountant before electing, because credits and exclusions at the state level don't always offset perfectly against what gets paid.
The single biggest failure point isn't understanding the strategy. It's missing the election window. Several states require the PTET election to be made and sometimes paid before the entity's fiscal year even closes, which means you can't decide in April to retroactively fix your prior year.
California, for instance, requires an estimated payment by June 15 of the tax year itself to qualify for that year's election. Miss that payment and you've lost the benefit for twelve months, full stop. New York requires the election by March 15, before most people have even finished gathering documents for the prior year's return.
Entities operating in multiple PTET states need separate elections, separate calculations, and separate estimated payments for each one. This is not a set-it-and-forget-it strategy. It needs a calendar, and it needs someone checking that calendar every quarter.
PTET workarounds exist because of the $10,000 SALT cap, and that cap is a creature of the 2017 tax law with provisions currently set to sunset after 2025 pending congressional action. If Congress lets the cap expire or raises it substantially, part of the incentive for PTET disappears, though many states will likely keep their elections in place regardless since entity-level tax has other administrative benefits for state revenue departments.
There's also concentration risk in relying on a single IRS notice rather than statute. Notice 2020-75 is administrative guidance, not law passed by Congress. It's unlikely to get reversed given how many states have built formal statutes around it, but unlikely isn't the same as impossible. Anyone building multi-year tax projections around PTET savings should treat it as durable but not permanent.
My take: use it while it exists. The savings are real, the IRS has blessed it in writing, and waiting for hypothetical future changes to tax law is a losing game every single time. Owners who skip PTET because they're worried about a policy reversal that hasn't happened yet are paying full SALT-capped tax for no reason.
PTET stands for Pass-Through Entity Tax. It's a state-level tax that partnerships and S corporations can elect to pay directly, instead of passing that tax liability through to individual owners on their K-1s.
Yes. The IRS confirmed its legality in Notice 2020-75, released in November 2020, which states that entity-level state tax payments are deductible on the entity's federal return without being subject to the $10,000 SALT cap that applies to individuals.
As of 2024, more than 36 states offer some form of PTET election, including California, New York, New Jersey, Illinois, and Connecticut. States without an income tax, like Texas and Florida, have no need for a PTET workaround since there's no state income tax to shift.
In most states, yes, the PTET election is annual and must be made fresh each tax year, often with a payment deadline that falls well before the entity's return is even due. A handful of states, like Connecticut, made the entity-level tax mandatory rather than elective.
No. If your total SALT deduction was already under the $10,000 cap before considering business income tax, shifting that tax to the entity level provides no additional federal benefit. PTET only helps owners whose state tax liability, combined with property and other SALT items, would otherwise exceed the cap.